NASDAQ:ASMB

Assembly Biosciences Stock Insider Trading

Healthcare > Biotechnology

Buy ASMB

*Your capital is at risk

$25.55

+0.330 (+1.31%)

At Close: Jul 24, 2026

Assembly Biosciences Stock Insider Power

Based on the 100 latest insides trades, we have calculated the insider power to be positive at 99.88. In total, the insiders bought 13.02M and sold 7.85K ASMB shares in the last 100 trades. The insider score can be negative despite buy/sell ratio being positive. The score focuses on the quality of the trades.

Insider Power (Last 100 transactions)	99.88
● Buy	13.02M shares
● Sell	7.85K shares
77% Buy Activity Weak Positive Correlation
Sell Signal Low Confidence Mar 30, 2026 Analysis Breakdown: Signal is highly questionable due to a strongly contradictory positive Insider Power Score of 99.88. Confidence increased due to high data reliability score of 100.

Historical Insider Trades

Date	Type	Person	Role	Amount
Aug 08, 2025 Buy	Class B warrants to purchase Common Stock P-Purchase	Gilead Sciences, Inc. 10 Percent Owner	10% Owner	1 147 960 Value: $24.8M
Aug 08, 2025 Buy	Class A warrants to purchase Common Stock P-Purchase	Gilead Sciences, Inc. 10 Percent Owner	10% Owner	1 147 960 Value: $24.8M
Aug 08, 2025 Buy	Common Stock P-Purchase	Gilead Sciences, Inc. 10 Percent Owner	10% Owner	2 295 920 Value: $2K
Jun 16, 2025 Buy	Common Stock A-Award	Bjorkquist Jeanette M Pfo And Pao	Officer	300 Value: $5K
Jun 16, 2025 Buy	Stock Option (right to buy) A-Award	Bjorkquist Jeanette M Pfo And Pao	Officer	600 Value: $10.3K
Jun 16, 2025 Buy	Stock Option (right to buy) A-Award	Bjorkquist Jeanette M Pfo And Pao	Officer	600 Value: $10.3K
Jun 16, 2025 Buy	Common Stock A-Award	Bjorkquist Jeanette M Pfo And Pao	Officer	300 Value: $5K
Jun 05, 2025 Buy	Stock Option (right to buy) A-Award	Houghton Michael Director	Director	3 500 Value: $55.3K
Jun 05, 2025 Buy	Stock Option (right to buy) A-Award	Mahony Susan Director	Director	3 500 Value: $55.3K
Jun 05, 2025 Buy	Stock Option (right to buy) A-Award	Mchutchison John G Director	Director	3 500 Value: $55.3K
Jun 05, 2025 Buy	Stock Option (right to buy) A-Award	Johnson-pratt Lisa Director	Director	3 500 Value: $55.3K
Jun 05, 2025 Buy	Stock Option (right to buy) A-Award	Ringo William R Director	Director	3 500 Value: $55.3K
Jun 05, 2025 Buy	Stock Option (right to buy) A-Award	Altig Anthony E Director	Director	3 500 Value: $55.3K
Jun 05, 2025 Buy	Stock Option (right to buy) A-Award	Consylman Gina Director	Director	3 500 Value: $55.3K
Jun 05, 2025 Buy	Stock Option (right to buy) A-Award	Consylman Gina Director	Director	3 500 Value: $55.3K
Jun 05, 2025 Buy	Stock Option (right to buy) A-Award	Altig Anthony E Director	Director	3 500 Value: $55.3K
Jun 05, 2025 Buy	Stock Option (right to buy) A-Award	Ringo William R Director	Director	3 500 Value: $55.3K
Jun 05, 2025 Buy	Stock Option (right to buy) A-Award	Johnson-pratt Lisa Director	Director	3 500 Value: $55.3K
Jun 05, 2025 Buy	Stock Option (right to buy) A-Award	Mchutchison John G Director	Director	3 500 Value: $55.3K
Jun 05, 2025 Buy	Stock Option (right to buy) A-Award	Mahony Susan Director	Director	3 500 Value: $55.3K
Jun 05, 2025 Buy	Stock Option (right to buy) A-Award	Houghton Michael Director	Director	3 500 Value: $55.3K
Mar 31, 2025 Sell	Common Stock S-Sale	Mchutchison John G Director	Director	757 Value: $7K
Mar 31, 2025 Sell	Common Stock S-Sale	Mchutchison John G Director	Director	757 Value: $7K
Mar 31, 2025 Sell	Common Stock S-Sale	Bjorkquist Jeanette M Principal Accounting Officer	Officer	180 Value: $2K
Mar 31, 2025 Sell	Common Stock S-Sale	Okazaki Jason A CEO And President	CEO / President	355 Value: $3K

About Insider Power

Insider Power is a proprietary algorithm developed by StockInvest.us to evaluate the significance of insider transactions. The calculation considers the size, type, and timing of transactions, as well as the insider’s role within the company.

It is important to note that, in general, there is little to no correlation between insider transactions and short-term stock price movements. In one of our studies, only 0.22%^* of stocks with insider activity showed a measurable correlation — and even then, it was unclear whether the effect was caused by insider actions or simply by the stock’s broader trend.

While our algorithms are designed to highlight potentially meaningful signals, these cannot be regarded as statistically significant on their own. Insider trading activity should therefore be seen as informative rather than as direct trading guidance. The Insider Power metric was created to present this information in a clearer and more accessible way, helping investors better understand the possible context of insider activity.

* October 6th, 2025 - Tested on 5562 stocks

ABOUT ASSEMBLY BIOSCIENCES

Assembly Biosciences, Inc., a clinical-stage biotechnology company, discovers and develops therapeutic candidates for the treatment of hepatitis B virus (HBV) infection in the United States. The company's lead product candidate is Vebicorvir, which as completed Phase 2 clinical trials to treat patients with chronic HBV infection. It is also developing ABI-H3733 that has completed Phase 1a clinical study, and ABI-4334, which is in pre-clinical tri...

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